Trifurcula pallidella

Trifurcula pallidella (Duponchel, 1843)

on Cytisus, Lembotropis

parasite

Larva solitary in a 3-6 mm tick and 13–26 mm long fusiform stem gall. Inside no gall chamber, but a spiralled gallery, almost completely filled with brown frass. The mature larva vacates the gall through a slit in its upper part, and pupates in a cocoon.